How we check the music
Every score in the library says how far it has been checked, on its page and on its card. 321 of 793 are checked bar by bar against a printed edition. The rest come from community sources that passed our automatic checks, and say so.
- level 258 / 97
- level 3175 / 431
- level 465 / 192
- level 519 / 55
- level 64 / 14
- level 70 / 4
Checked against the edition Two sources agree Community source
Checked against the edition 321 scores
Every bar agrees with a second, independent reading of a named public-domain edition, and every place where the two differed was looked up in the scan of that edition and settled. The piece page names the edition and links its scan.
Among them: Golliwogg's Cake-walk, from Children's Corner (Claude Debussy), Humoresque, Op. 101 No. 7 (Antonín Dvořák), June: Barcarolle, Op. 37a No. 6 (Pyotr Ilyich Tchaikovsky), Melody in F, Op. 3 No. 1 (Anton Rubinstein), and Pavane pour une infante défunte (Maurice Ravel).
Our own engravings: typed from the scan twice, each typing done without seeing the other, or typed once and compared with copies others shared online.
Two sources agree 0 scores
Two independent copies of the piece, made by different people from different sources, agree note for note. Copies of one another count as one.
Comparing a community score with a second one, for example a MuseScore upload with a Mutopia edition.
Community source 472 scores
One copy, shared by a volunteer on MuseScore or the Mutopia Project. It passed our automatic checks (complete bars, notes a hand can reach, repeats we can follow, the key its title names), and a sample of these scores is spot-checked against their sources, but this one hasn't been checked bar by bar.
Most of the library starts here. A community score moves up when a second source agrees with it, or when the bars where sources differ are read from a scan.
In the library, tick Checked against an edition only to see only those.
What we never publish
A score nobody has checked at all: a copy that fails the automatic checks, a repair with nothing to compare it with, or a computer's reading of a scan on its own. If a reader finds a wrong note, or a new source disagrees, that score comes off the library until it is settled.
How each score was made
- Typed twice from the scan and compared273
- Typed from the scan and compared with MuseScore copies48
- A MuseScore upload, as shared302
- A Mutopia Project edition, as shared170
Every score is public domain or freely licensed, and its source is credited on its page and in the credits.
Moving up
We check community scores against a second source over time, the music most readers ask for first. A score that moves up says so on its page.
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